Intel SRCMR, User Manual

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160 Intel RAID Controller SRCMR User’s Guide
Replace a Logical Drive
Click the right mouse button on the logical drive icon.
If a logical drive of an array drive without a hot fix drive should fail (or is very likely to fail), you
should replace the defective hard disk with a new one as soon as possible, because the array drive is
without redundancy. The replacement logical drive has to have at least the same capacity as the
failed one. The replacement is carried out with StorCon or the . Before the logical drive
can be removed, you must select a new logical drive from the box with available physical drives
that is shown after this option is selected. If no physical drive is offered, you have to use the Hot
Plug: Replace Drive hotplug_replace_drive function to add a new drive. After the confirmation,
the old logical drive is removed. Next, the data is rebuilt on the new logical drive. During this
process the array is in the rebuild state state_build and therefore not redundant.
The Different States of an Array Drive
Some of these states may have the addition of /patch (for example, build/patch, ready/patch). This
indicates that the original array drive. For example, the parity information was recalculated or the
array drive has been patched from the error state into the fail state. This may become helpful in a
situation where two logical drives of an array drive fail at the same time, but only one of the two
logical drives is really defective and the other was blocked out since it was connected with the same
I/O channel as the defective one. The array drive’s state is error and normally all data would be
lost. Intel RAID Controller SRCMR includes some functions that allow the patch of this array
drive from the error state into the fail sate. Before the actual patch, the defective drive has to be
physically removed from the array drive. Such a patch procedure should only be used after a
consultation with a trained support person (a printout of the Save Information file, is extremely
helpful).
The Ready State
The array drive is fully operational when in the ready state. All redundant information is present,
that is, a hard disk can fail without impairing the functionality of the array drive. This is the normal
state of an array drive. The ready/expand state indicates that the RAID level and/or capacity are
currently migrated/expanded.
Figure 98. The Ready State